void ConvexVolumeTool::handleClick(const float* /*s*/, const float* p, bool shift)
{
if (!m_sample) return;
InputGeom* geom = m_sample->getInputGeom();
if (!geom) return;
if (shift)
{
// Delete
int nearestIndex = -1;
const ConvexVolume* vols = geom->getConvexVolumes();
for (int i = 0; i < geom->getConvexVolumeCount(); ++i)
{
if (pointInPoly(vols[i].nverts, vols[i].verts, p) &&
p[1] >= vols[i].hmin && p[1] <= vols[i].hmax)
{
nearestIndex = i;
}
}
// If end point close enough, delete it.
if (nearestIndex != -1)
{
geom->deleteConvexVolume(nearestIndex);
}
}
else
{
// Create
// If clicked on that last pt, create the shape.
if (m_npts && rcVdistSqr(p, &m_pts[(m_npts-1)*3]) < rcSqr(0.2f))
{
if (m_nhull > 2)
{
// Create shape.
float verts[MAX_PTS*3];
for (int i = 0; i < m_nhull; ++i)
rcVcopy(&verts[i*3], &m_pts[m_hull[i]*3]);
float minh = FLT_MAX, maxh = 0;
for (int i = 0; i < m_nhull; ++i)
minh = rcMin(minh, verts[i*3+1]);
minh -= m_boxDescent;
maxh = minh + m_boxHeight;
geom->addConvexVolume(verts, m_nhull, minh, maxh, (unsigned char)m_areaType);
}
m_npts = 0;
m_nhull = 0;
}
else
{
// Add new point
if (m_npts < MAX_PTS)
{
rcVcopy(&m_pts[m_npts*3], p);
m_npts++;
// Update hull.
if (m_npts > 1)
m_nhull = convexhull(m_pts, m_npts, m_hull);
else
m_nhull = 0;
}
}
}
}
